Windmill



(No Model.) v

H. B.v COLMAN.

WINDMILL.

Patented'Aug. 3, 1886.

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UNITED STATES HUTSON B. COLMAN, OF KALAMAZOO, MICHIGAN.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 346,582, dated AugustA3, 1886.

Application filed April 27, 1886. Serial No. `200,305. (No model.) I

To all whom it may concern.:

Beit known that I, HUTsoN B. CoLMAN, a citizen of Ythe United States,residing at Kalamazoo, county of Kalamazoo, State of Michigan, haveinvented a new and useful Windmill, of which the following is aspecification.

This invention relates to windmills in which the power-shaft isconnected with machinery to be driven by means of a shaft havinguniversal-joint connections.

The object of the invention is to prevent the wind-wheel from beingdeiiected out of its proper position in the Wind, caused bytheresistance of the driven machinery.

Another object is to prevent the chain which is employed in windmillsfor throwing the wheel out ofthe wind from becoming entangled with theconnectingshaft which has the universal joints, caused by the chainwindingv around said shaft when the upper end of the latter describes acircle or a fractional portion thereof during the rotation of themill-head in its swiveled bearings. v

These objects are attained by the improved u means below described andclaimed.

In the accompanying drawings, forming a part of this specification,Figure lis a side elevation of a construction embodying my invention,portions being in vertical section; Fig. 2, an enlarged detail of Fig.l, pointed out by like letters, looking from a point at the right handof Fig. l; Fig. 3, an elevation looking from a point at the left of Fig.4, and Fig. 4 an elevation looking from a point at the right of Fig. 3.The two latter-named figures show a change in the construction shown inFig. 2.

Referring to the letters of reference marked on the drawings, Brepresents the derrick, in the top of which the mill-head has theordinary swiveled or ball bearings; D, the windwheel, (with sailsremoved,) the shaft of which has bearings in the mill-head. Thus themillhead constitutes the swiveled bearing-support ofthe wind-wheelshaft, as in other mills. The vane is shown at A, and a is the chainattached to the vane for throwing the wheel out of the wind, theoperation being well understood.-

At P is shown a fixed bearing-support for machinery to be driven. Theshafts f t', with their meshing gears, are merely shown to illusings.

One of my improvements in connection with the above features brieiiyreferred to consists in placing the vertical power-shaft a at one sideof the vertical center of the mill-head. A vertical line interceptingthe point c in Fig. l would indicate said center or axis of themillhead. Of course the power-shaft ct in this position has bearings inthe head and tubular portion thereof, the same as a power-shaft wouldhave at the vertical axis of the millhead.

At cis shown a shaft connected with the lower end of the shaft a, andconnected with the machinery having the fixed bearings by the universaljoints r r. Of course the upper end of the power-shaft a gear-connectswith the wheel-shaft in any suitable manner, Fig. l. Both the shafts a creally constitute the powershaft of the mill,when connected as shown.

The reason that the wind-wheel will not be deflected by the resistanceof the driven machinery is, that the upper shaft, a, and the millheadhave not a center or axis in common.

The shaft c and universal `joints r r, per se, are not new in thisapplication; but by my new construction and arrangement I have dispensedwith cumbersome and expensive mechanism and gearing, and greatlyfacilitated the operation.

At u is shown a hollow shaftsuspended from the mill-head, down throughwhich shaft the chain a is passed. This shaft u might be aa solid bar aswell, to the lower end of which the end of the chain could be attachedor anchored. A windlass is shown at x, the chain being attached thereto,and said windlass being used to anchor and Wind up the chain.

At o in Figs. 3 and fi an arm is shown having a recess to receive thechain-link and hold the chain. This is illustrated to show the idea of asuspended anchor for the end ofthe chain.l

mill-head turns. During this action the suspended chain anchor iscarried around, and lthus always preserves a like relation with theshaft c. For this reason, as the chain is carried' with the anchor, theshaft c and the chain will not conflict, nor one become wound around theother.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. In a windmill, a power-shaft composed of two shafts connected byauniversal joint, the portion of the shaft above said joint being passedvertically through the mill-head and at one side of the Vertical axis ofsaid head, and the lower portion of the shaft being eX- tended obliquelyto and connected by a universal joint with machinery to be driven,substantially as set forth.

2. An anchor for the chain employed in windmills for throwing the wheclout of the wind, said anchor being suspended from the swiveledmill-head, whereby the rotationof the millhead changes the location ofthe anchor without disturbing its relative position with a point whichwould be intercepted by a vertical line passing through the axis of themill-head, substantially as set forth.

3. rlhe combination, with a wind-Wheel shaft, of the swiveled mill-head,machinery having a fixed bearing-support, a vertical power-shaft at oneside of the vertical axis of the head, a shaft connected by universaljoints with the power-shaft and with the machinery to be driven, and ananchor suspended from the mill-head for the chain employed to throw thewheel out of the wind, substantially as set forth.

4t. A windlass serving as an anchor for the chain employed in windmillsfor throwing the wind-wheel out of the wind, said windlass beingsuspended from the mill-head, substantially as set forth.

5. The combination of a windmill-head and a hollow shaft suspended fromthe head, said shaft being provided at its lower free end with an anchorforthe chain employed in throwing the wind-wheel out of the wind,substantially as set forth.

In testimony of the foregoing I have hereunto subscribed my name inpresence of two witnesses.

HUTSON B. COLMAN. Vitnesses:

EUGENE C. SOUTHARD, GEO. D. B. HALL.

